The market rate of interest can not directly substitute the social discount rate for its defect on preference revealing, interest forming, the reward of risk, etc.
而市场利率由于在偏好揭示、利率形成、风险报酬等方面的缺陷，又不能直接替代社会贴现率。
Furthermore, the article analyzed the relationship between the optimal growth rate and the discount rate, the production technology, and worker's preference respectively.
此外，还分别分析了效率工资的最优增长率与贴现率、厂商生产技术和工人偏好之间的关系。
Haidilao and Wangxiangyuan nationwide stores and Pizza Hut stores in Shanghai will give you a discount of 50% on December 12, if you pay though Alipay, the preference is 50 yuan at most.
海底捞、望湘园的全国门店和必胜客的上海门店，在12月12日当天，使用支付宝钱包付款，均可打5折，优惠50元封顶。
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